How many kinds of external wall insulation boards are there? What is the construction technology of external wall insulation board?

What is an external wall? Insulation board? As the name implies, we can know that it is an insulation board used on the wall. Because we know that some special processes are added to the insulation board when it is made, ordinary boards have the function of insulation, but many friends may not know it very well. If you choose insulation board, how to construct it? About the types of insulation boards and how to construct them, here are some introductions for you. Let's have a look.

How many kinds of external wall insulation boards are there?

First: Benzene board is widely used now, but the insulation effect is not ideal, and it will absorb water, so if you use benzene board, you will generally do some waterproof measures.

Second: extruded board, which is much better than benzene board, has low thermal conductivity and high price.

Third: polyurethane, a relatively high-end thermal insulation material, is also the best one. Generally speaking, it is used in some places with extremely strict requirements in this respect, and because of the high price, there are few houses.

Fourth: Glass wool and rock wool, glass wool and rock wool have many similarities in performance, which are easily confused by many people, but because glass wool feels better than rock wool, the price is generally higher than rock wool.

Introduction of insulation board construction technology

1. Install heat shield. The standard plate size is 300*300, and the diagonal error is less than 3 mm If you need to cut, you can use a small cutting saw, and the allowable deviation of the insulation board size is 2; Grid cloth turnover: paste grid cloth at the openings of doors and windows and at both sides of deformation joints. The total width is about 200, and the turnover part is 80. The specific method is as follows: the cutting length of the grid cloth is 180 plus the plate thickness. First, apply 80-long and 2-wide special glue to the bag turning part, then press in 80-long grid cloth, and throw the rest out for later use; The prepared special adhesive is coated on the back of the composite foamed cement board, and the compaction thickness of the adhesive is about 3. In order to ensure the firm bonding, it is best to use the total immersion method, the strip bonding method and the strip point method.

2, the installation is fixed. Fixtures should be installed within 8 hours after the insulation board is pasted and completed within 24 hours. According to the design requirements, drill a hole with an impact drill, the aperture is 10, the depth of drilling into the foundation wall is about 60, and the depth of anchoring the fasteners into the foundation wall is about 50, so as to ensure firmness and reliability; The number of fixing pieces should be set according to each board. Self-tapping screws should be tightened, and the engineering plastic expansion nail cap and the surface of composite foamed cement board should be screwed in neatly or slightly, so as to ensure that the tail of the expansion nail rotates and is fully anchored with the foundation wall.

Step 3 polish. The uneven joints of the insulation board should be polished with coarse sandpaper, and the movements should be gently circled, not along the direction parallel to the board joints; Clean the floating ash with a brush in time after polishing; According to the design requirements, use ink line to pop out the position where the line angle needs to be made, and make horizontal and vertical correction; Notch Angle Cut the plate into notches with a grooving machine, and the thinnest part of the notch shall not be less than15; After cutting out the protruding line angle according to the design size, brush the interface agent on both sides of the line angle and the corresponding insulation board, and then coat it with special glue to make it stick firmly. Primer polymer mortar

4. Press in the grid cloth. Grid cloth should be cut according to the length and width of the working face, and the lap width should be reserved. The cutting of grid cloth should be carried out along the warp and weft direction; Turn over the grid cloth around the holes such as doors and windows, and reinforce the four corners with a layer of grid cloth. The whole grid cloth should be turned around the hole and above the additional grid cloth; Polymer mortar should be coated on the front and side of extruded board, holes and the turnover of grid cloth (only polymer mortar can be coated on the end edge of extruded board here). Turn the pre-throwing grid cloth along the thickness of the plate and press it into polymer mortar.

5. Stretch the whole grid cloth horizontally, pay attention to the inward bending side of the grid cloth, and smooth the grid cloth up and down from the middle with a trowel to make it tight. The horizontal lap width of grid cloth shall not be less than 100, and the vertical lap length shall not be less than 80. Polymer mortar is used to supplement the gap of the bottom mortar at the lap joint.

The above introduces the construction methods and types of external wall insulation board. We should know something about this problem. We know that different insulation boards are made of different materials, and insulation boards have certain corrosion resistance. Some insulation boards have light geology, and some insulation boards have good insulation performance, so we should buy according to our own needs when buying, so the products we choose are suitable.

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